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Power Options
The Cisco Aironet 1250 Series Access Point may be powered by a Cisco Ethernet switch, a power
injector, or a local power supply.
Cisco Ethernet Switch
The number of radio modules determines which Cisco Ethernet switch can power the Aironet 1250
Series access point. There are two scenarios:
Aironet 1250 Series Access Point with one RM1252 radio module installed
The Aironet 1250 Series Access Point with one RM1252 radio module installed requires 12.95W,
which is within the 802.3af Power over Ethernet standard. Any Cisco switch supporting 802.3af
may be used to power the Aironet 1250 Series Access Point with one RM1252 radio module
installed.
Aironet 1250 Series Access Point with two RM1252 radio modules installed
Beginning late 2007, Cisco will enable auto-negotiating, single-port power for the Aironet 1250
Access Point on leading switches across the Catalyst portfolio. This unique, integrated solution
provides the full power requirements for dual radio modules and eliminates the need to run an
additional cabling drop or insert a separate power injector.
Power Injector
The power injector for Cisco Aironet 1250 Series Access Points (AIR-PWRINJ4) contains an
integrated power supply that converts 100 to 240 volts AC into 56 volts DC and then injects this
power onto the Category 5 Ethernet cable to power the access point (Figure 2).
Figure 2.
Cisco Aironet Power Injector: Providing Inline Power to Cisco Aironet Access Points
As shown in Table 3, a Cisco Aironet Power Injector can be configured to order or can be ordered
as a separate item. If the power injector is configured with the access point order, it will ship inside
the packaging box of the access point. If the power injector is ordered as a spare, it will ship in a
separate box.
Table 3.
Cisco Aironet 1250 Series Power Injector Product Numbers
Product Number
AIR-PWRINJ4
AIR-PWRINJ4=
Product Description
Cisco Aironet Power Injector for the 1250 Series
Cisco Aironet Power Injector for the 1250 Series (Spare)
Data Sheet
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